Drawing or stamping press



(No Model.) 4 Sheets-Sheet 1.

B. JORDAN. DRAWING 0R STAMPING PRESS.

No. 503,422. Patented Aug. 15, 1893. f/Z/Z (No Model.) 4 Sheets-Sheet 2.

E. JORDAN. DRAWING 0R STAMPING PRESS.

No. 503,422. Patented Aug. 15,1893.

(No Model.) 4 Sheets-Sheet 3. E. JORDAN.

DRAWING 0R STAMPING PRESS. N0.'503,4ZZ. Patented Aug..15. 1893.

I j W W (No Model.) 4 Sheets-Sheet 4.

. E. JORDAN.

DRAWING 0R STAMPING PRESS.

No 503,422. Pa tentedAug. 15, 1893.

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UNITED STATES PATENT OFFICE.

EDMUND JORDAN, OF BROOKLYN, NEW YORK.

DRAWING OR STAMPING PRESS.

SPECIFICATION forming part of Letters Patent No. 503,422, dated August 15, 1893.

Application filed February 13, 1893- Serial No. 462,024. (1% model.)

To aZZ whom it may concern.-

Be it known that I, EDMUND JORDAN, a citizen of the United States, and a resident of ing made to the accompanying drawings in which- Figure 1, is a side elevation of my improved Fig. 2, is a front drawing or stamping press. elevation. Fig. 3, is a central sectional elevation of the same except the bed plate on line a; w, of Fig. 2. Fig. 4, is ahorizontal section of parts of the press on line y y, Fig. 2. Fig. 5, is a side elevation of the cross-head carrying the male die or plunger. Fig. 6, is a horizontal section of the standards of the frame on line a c, Fig. 2. Fig. 7, is a top plan of the frame, and some of the apparatus for automatically unclutching the driving gear. Fig. 8, is a detail of apparatus used for operating the blank holder. Fig. 9, is a side elevation of some of the clutching and unclutching apparatus on an enlarged scale. Fig. 10, is a plan view of the bracket in which the driving shaft is mounted. Fig. 11, is a side elevation, and Fig. 12, an end elevation of said bracket detached from the rest of the machine.

The female bed die CL, is arranged on the base I), between the standards 0. The blank holding die cl is arranged to slide in ways e, on thestandards,and the stamping die or plunger f is carried in the cross head Z arranged to slide in the ways g, in the stock of the blank holding die d, in the usual way, the plunger being coupled by its connecting rod g, with the crank h, which is geared by the spurwheel 2', on one end of the crank-shaft, with the pinion j of the counter shaft which is geared by the spur wheel Z, with the pinion m of the clutch 'n, 011 the driving shaft 0 to which power is applied by the pulley 0, on which the driving belt runs.

To operate the blank holding die as usual in such presses, viz: to close down on and hold the margin of the blank a in the recess I p of the bed die, as indicated by the dotted lines Z) Fig. 3 in advance of and while the plungerf, is doing its work, I use two other crank-shafts as g on the front and back sides of the standards respectively, and preferably a little lower than the main crank-shaft 7:, said shafts having intermittent rotation and preferably having two cranks in each and being coupled by connecting rods 8 and bars 2) with the cross-head t of the blank holding die, said cross-head having in this example the perforated lugs to, in which the screw thread ed rods w, pendent from bars o, are secured by nuts ac, whereby the cross-head may be readily adjusted to gage the blank holding .die with relation to the bed die for gripping the blank with the proper pressure, but the ,means of making the connection and. adj usting the blank holder may be varied at will.

To operate these crank-shafts I gear them with another crank-shaft as y, turning twice as fast as crank-shaft h, and preferably located on the top of the press in such manner that the blank holder will be moved downward in half the time of the down movement of the stamping die and will then be held down by the cranks of the shafts q, until the plunger has completed. its work, when saidholding die will be raised in shorter time than the time of the rise of the plunger and be held up until the beginning of the descent of the plunger again, this being effected through the intermittent motion of the crank-shafts q, one pause of which occurs when the blank holder is bearing on and holding the blank, the cranks of shaft y being then in the line for sustaining the pressure of the blank holder, and the other pause occurs when said blank holder is in the upper part of its range, the pausing crank shafts thus rotating in unison with the rotations of the main crank-shaft which operates the plunger. While these crank-shafts q may have such intermittent rotations imparted to them in various ways, means which I have adopted in this example of my invention consist of the reciprocating duplex toothed rack a arranged in slide ways log e of a rock-shaft f supported in the bracket 9 I) on the outside of one of the standards 0 and coupled by connecting rod d with the crank e of shaft y, said rack being geared with the crank-shafts g by the loose pinions f thereon; the pawlsg pivoted to the pinions and the ratchets hkeyed to the shafts so that said crank shafts q will only be turned while the pinions turn forward during the down strokes of the rack, and will dwell while the pinions turn backward during the up strokes of the rack.

The crank-shaft y is geared with the main crank-shaft h by the spur wheel t" on the lat-' ter, and the pinion j on said shaft y, said pin-l ion j being half the size of wheel 71' to double the speed of said shaft 1 The crank-shafts q are mounted at the extremities of arms 7t projecting from the sides of the standards 0 and preferably cast integral with them. The cross head Z carrying the plungerfis coupled by the ball and socket joint m in the usual arrangements of these parts in presses of this I kind.

and the press stopped after each revolution when so desired, and may also be caused t0- run continuously Without stopping when such; action may be desired, I connect the treadle to the free end of a bell-crank shifter s by,

the rod 25' and the toggle jointed links to one of said links being jointed to said free end of the shifter and the other link having a fill crum at 0, so that after the clutch has been connected by pressing the treadle down, and the treadle is released by the foot, the spring to will raise the treadle and thereby raise the shifter 3 clear of the bell-crank; said shifter is pivoted at t to a fixed support and the free at a and being thrust by the spring a will engage stud pin Z) in the free end of the bellcrank it; the bar y has a fulcrum at a and is connected by the rod d with the crank c and connected by a crank 71 and link i with the lever 3' pivoted in the bracket K so that the tappet Z on the crank-shaft It will thrust said lever when the blank holder and plunger.

reach the uppermost position and raisehook 0c, and bell-crank n so as to disconnect the clutch. The shifter s has a stud pin m which prevents hook 00 from engaging the bell-crank To start and stop the press readily as is frequently required the friction clutch 'n is em-, ployed with a bell-crank 'n to slide the cone; forward under the arms 10 to connect the parts by the clutch and backward therefrom for disconnection with a foot treadle q to be} pressed down by the foot to shift the cone for-t ward to connect the clutch. In order that the, clutch may be automatically disconnected while the foot treadle is held down by the attendant so that by so holding it down he may cause the press to run continuously as long as he desires.

The plate 1: to which the bell-crank n is pivoted at 12 also the bell-crank shifter s at 25 also one of the links a at o, and also the bar at y at "a is a part of the bracket 10 in which the driving shaft 0 is mounted; the hole 4 in theflange of the bracket and the perforated lug 5, constitute slide ways for the guide bar 3 of the cone 0'; the rod 25' extends through the hole 25 1. In a drawing orstamping press, the combination of a reciprocatingplunger, a reciprocating and pausing blank holding die, and intermittingly or pausing but only forwardly moving rotatory crank-shafts for operating said holding die, and holding it for holding the blank substantially as described.

2. In a drawing or stamping press,-the combination of a reciprocating plunger, a reciprocating and pausing blank holding die, intermittingly or pausing rotating crank-shafts for operating said holding die, and holdingit for holdingthe blank, and means for rotating said pausing crank-shafts in unison with the rotations of the shaft actuating the plunger substantially as described.

3. In a drawing or stamping press, the combination of a reciprocating plunger, a-reciprocatingaud pausing blank holding die, intermittingly or pausing rotating crank-shafts for operating said holding die, and holding it for holding the blank, the reciprocating rack,rand the forwardly driving and backwardly idle pinions for rotating said crankshafts substantially as described.

4:. In a drawing or stamping press the combination of a reciprocating plunger, a reciprocating and pausing blank holding die, intermittingly pausing rotating crankshafts for operating said holding die, and holding it for holding the blank; the reciprocating rack, the forwardly driving, and backwardly idle pinions for rotating said crank-shafts, and the crank-shaft connected with the rack and having double the speed of thestamping die act- EDMUND JORDAN. WVitnesses:

W. J. MORGAN, 4 C. E. WHITNEY. 

